3. Description and function of a neuron Flashcards
1
Q
cell body
A
D: part of the neuron that contains the nucleus
F: passes impulse from dendrites to the axon
2
Q
Dendrites
A
D: short extensions of the cytoplasm
F:carry impulse to the cell body
3
Q
Axon
A
D:a single long extension of the cytoplasm
F:carries impulses from cell body to the axon terminal
4
Q
Schwann cell
A
D: a special cell which wraps around the axon
S:creates myelin
5
Q
Myelin
A
D:a layer of fatty material that covers the axon
S:speeds up nerve impulse transmission
6
Q
Neurilemma
A
D: the outer most coil of the myelin sheath
S: helps in the repair of injured fibres
7
Q
Node of ranvier
A
D: a gap in the myelin sheath
8
Q
Axon terminals
A
D: end of the axon
S: receives the impulse from the axon and passes impulses into the synapse.
9
Q
draw and label a neuron
A
look at diagrams
